Please note that not all cases of disease or outbreaks are reported; some outbreaks may only be reported if they occur outside of the usual recognised risk area or season, or they have been reported in greater than usual numbers. See 'About Outbreaks' tab below for further detail.
For further information on red, amber and green alert categories, see About Outbreaks tab.
West Nile virus in Romania
In 2026, up to 23 September, 91 locally acquired human cases of West Nile virus have been reported in Romania, across 22 areas. Please see our Topics in Brief article for further details on West Nile virus.
Occitanie
Île-de-France
Auvergne-Rhône Alpes
Provence Alpes-Côte d’Azur
Pays de la Loire
Centre-Val de Loire
West Nile virus in France
As of 21 September 2026, 117 autochthonous cases of West Nile virus have been recorded in Provence-Alpes-Cote d'Azur, Occitanie, Ile-de-France, Auvergne-Rhone-Alpes, Nouvelle-Aquitaine, Pays de la Loire and Centre-Val de Loire. Please see our Topics in Brief article for further details on West Nile virus.
Leipzig
Rhein-Pfalz-Kreis
West Nile virus in Germany
In 2026, up to 23 September, four locally acquired human cases of West Nile virus have been reported in Germany. Cases have been reported from Berlin, Leipzig Kreisfreie Stadt and Rhein-Pfalz-Kreis. Please see our Topics in Brief article for further details on West Nile virus.
Overijssel
South Holland
Utrecht
North Holland
Gelderland
West Nile virus in Netherlands
In 2026, up to 23 September, 44 cases of West Nile virus, including 5 deaths, have been reported in the Netherlands. Cases have been reported from South Holland, Utrecht, North Holland, North Brabant, Gelderland and Overijssel provinces. Please see our Topics in Brief article for further details on West Nile virus.
Minnesota
New York
Pennsylvania
Hepatitis A in USA
As of 17 September 2026, 37 cases of hepatitis A have been reported from four states: Massachusetts, Minnesota, New York and Pennsylvania. Cases are associated with consumption of raw/undercooked shellfish imported from Ecuador. Please see our Topics in Brief article for further details on hepatitis A.
Chikungunya in USA
Between 6 and 12 September 2026, one case of locally acquired chikungunya was reported in Florida, USA. Please see our Topics in Brief article for further details on chikungunya.
Chikungunya in Hong Kong
On 17 September 2026, a locally acquired case of chikungunya was reported. This is the first locally acquired case of chikungunya in Hong Kong in 2026. Please see our Topics in Brief article for further details on chikungunya.
Mpox in Estonia
In August 2026, one new clade I mpox case was reported in Estonia. This is the first case of clade I mpox in Estonia. Please see our Topics in Brief article for further details on mpox.
Mpox in Iceland
In August 2026, one new clade I mpox case was reported in Iceland. This is the first case of clade I mpox in Iceland. Please see our Topics in Brief article for further details on mpox.
Mpox in Malta
In August 2026, three new clade I mpox cases were reported in Malta. These are the first cases of clade I mpox in Malta. Please see our Topics in Brief article for further details on mpox.
NaTHNaC regularly review and update information on disease outbreaks and other health issues that may affect the UK traveller. You can search the information by disease or by country in our Outbreak Surveillance section.
The information comes from a wide variety of sources and can be used along with the Country Information section of our website where you will find recommendations on vaccines, malaria and other risks for each country (where relevant).
Please note that not all cases of disease or outbreaks are reported. In some countries, there may be limited surveillance and reporting processes in place so information can be difficult to obtain. Some diseases may only be reported if they occur outside of the usual recognised risk area or season, or they have been reported in greater than usual numbers. Outbreaks of those diseases included in the UK childhood vaccination programme are not usually reported unless the outbreak is unusual or unexpected.
The information presented in the disease surveillance reports is collated from a variety of sources, including government bodies, international organisations and the media. The verification status of each report is clearly indicated. Verified reports are confirmed by official sources. Some unverified reports are included to ensure timely dissemination of information and where possible we will try to substantiate these reports, although confirmation may not always be possible. Unverified reports may be subject to change, misreporting and may later prove to be unsubstantiated. They should not therefore be regarded as official.
Where available, a web link is provided to the original information source. We cannot accept responsibility for the sites to which it links, or for the information found on those sites. Linking to outside sites does not in any way imply endorsement of these sites. If you wish to use the following content for official purposes, please refer to the original sources of information.
Key to NaTHNaC alert level feature
LEVEL 1: GREEN |
Take usual precautions
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Follow standard protective measures, as recommended for this destination, disease or situation. Be aware that advice may change and check for updates. |
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LEVEL 2: AMBER |
Take extra precautions
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Follow any additional precautions recommended. Be alert and check regularly for changes in advice about this ongoing situation. Advice may be relevant for all travellers or apply to a specific group of travellers. |
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LEVEL 3: RED |
FCDO advise against travel
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The Foreign, Commonwealth & Development Office (FCDO) advise against travel on health grounds. This may mean avoiding non-essential travel, or all travel, follow the FCDO advice for details. Please note we do not report on FCDO safety and security alerts. Travellers should check the FCDO travel advisories for their destination for this information. |
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Alert categories are based on the situation at the time of publication. They will not be routinely updated unless outbreak information or a news item is updated.
